2007 Chevrolet Impala check engine light -Dunno if you're talking about the engine compression or manifold absolute pressure-If the CEL is on-Do below
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
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Tuesday, November 30th, 2010 AT 6:57 AM